Re: Exadata backups
From: Viljo Hakala <hakala.viljo_at_gmail.com>
Date: Mon, 28 Oct 2013 23:50:05 +0200
Message-Id: <ED865089-9F78-4D6A-AD51-89CD70BD9CA1_at_gmail.com>
With some experience of DataDomain using RMAN, you can use multiple channels but in practice for de-duplication to work effectively only 1 file per set or image copy.
Date: Mon, 28 Oct 2013 23:50:05 +0200
Message-Id: <ED865089-9F78-4D6A-AD51-89CD70BD9CA1_at_gmail.com>
With some experience of DataDomain using RMAN, you can use multiple channels but in practice for de-duplication to work effectively only 1 file per set or image copy.
As mentioned in the following document.
http://www.emc.com/collateral/hardware/white-papers/h8110-oracle-rman-data-domain-wp.pdf
Guillermo Alan Bort <cicciuxdba_at_gmail.com> kirjoitti 28.10.2013 kello 23.41:
> If you have a ZFS appliance, then the RMAN backup can actually be offloaded
> to the storage cells. That alone make exadata + zfs a LOT better than
> exadata + DD.
> I've worked a couple of times with DD, but only over ethernet, and I was
> not impressed by the performance and there were a lot of limitations
> regarding number of channels and such.
-- http://www.freelists.org/webpage/oracle-lReceived on Mon Oct 28 2013 - 22:50:05 CET